Re: [JDBC] Does the JDBC connection failover require Postgres 10?
| От | David G. Johnston |
|---|---|
| Тема | Re: [JDBC] Does the JDBC connection failover require Postgres 10? |
| Дата | |
| Msg-id | CAKFQuwZPcmJxtzHnebGZMT0APfxfxt69GWSG2HmxtQOmAiazgA@mail.gmail.com обсуждение исходный текст |
| Ответ на | [JDBC] Does the JDBC connection failover require Postgres 10? (Thomas Kellerer <spam_eater@gmx.net>) |
| Ответы |
Re: [JDBC] Does the JDBC connection failover require Postgres 10?
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| Список | pgsql-jdbc |
The Postgres JDBC driver offers a way to specify multiple hosts in the connection URL:
https://jdbc.postgresql.org/documentation/head/connect. html#connection-failover
However, it is unclear to me if that feature relies on the libpq feature introduced in Postgres 10:
https://www.postgresql.org/docs/current/static/libpq- connect.html#libpq-multiple- hosts
or if this is handled by the driver internally?
In short, it is handled by the driver internally.
There is no server support (which make sense given failure to connect would preclude the presence of a server) in the libpq implementation of this behavior - i.e., its not a protocol thing but a client implementation. The JDBC driver does not utilize libpq at all, it directly implements the PostgreSQL communication protocol.
David J.
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